From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eshel Yaron via "Bug reports for GNU Emacs, the Swiss army knife of text editors" Newsgroups: gmane.emacs.bugs Subject: bug#63825: 29.0.90; The header line should be hidden when empty Date: Thu, 01 Jun 2023 19:45:39 +0300 Message-ID: References: <838rd3cg7u.fsf@gnu.org> Reply-To: Eshel Yaron Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="28883"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Cc: Spencer Baugh , 63825@debbugs.gnu.org To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Thu Jun 01 18:46:32 2023 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1q4lRY-0007KW-Ml for geb-bug-gnu-emacs@m.gmane-mx.org; Thu, 01 Jun 2023 18:46:32 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1q4lRE-0001mL-S0; Thu, 01 Jun 2023 12:46:12 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1q4lR5-0001kS-I9 for bug-gnu-emacs@gnu.org; Thu, 01 Jun 2023 12:46:04 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1q4lR4-0001I1-3I for bug-gnu-emacs@gnu.org; Thu, 01 Jun 2023 12:46:03 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1q4lR3-0002HZ-V7 for bug-gnu-emacs@gnu.org; Thu, 01 Jun 2023 12:46:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eshel Yaron Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Thu, 01 Jun 2023 16:46:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 63825 X-GNU-PR-Package: emacs Original-Received: via spool by 63825-submit@debbugs.gnu.org id=B63825.16856379568759 (code B ref 63825); Thu, 01 Jun 2023 16:46:01 +0000 Original-Received: (at 63825) by debbugs.gnu.org; 1 Jun 2023 16:45:56 +0000 Original-Received: from localhost ([127.0.0.1]:38415 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1q4lQy-0002HC-11 for submit@debbugs.gnu.org; Thu, 01 Jun 2023 12:45:56 -0400 Original-Received: from mail.eshelyaron.com ([107.175.124.16]:55630 helo=eshelyaron.com) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1q4lQk-0002Gn-OC for 63825@debbugs.gnu.org; Thu, 01 Jun 2023 12:45:54 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=eshelyaron.com; s=mail; t=1685637942; bh=gcf7vfuO09Tq11mLwblyULfzEJ0P+6j5NXWL10pP9/s=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=GC3CW7E3oawRA1ay782qo/iznPuwfBai29DUWyA8Swoc9OAbSHdTpMeMVkYisF+S+ 5ARF8Qu86gN7ZfECOlR/X0g/QIZ6BeZnL/kYO4HxgwTqJx2kSli7cOlOXmK0ot1oQq AKQhBCGTeFaMe4MfOAbQIKOu9tzKm+nMcK/gjRAURcHoL32uDfzL21crwt2QDIKpIo iJf0AGU+Fpdu/Zoct2owhAXSWIGMZv2Jje1RZG2G7eazwlFNYBVonB1RbSpAOpdbNK py3qd8RVTj/DpUoFwMSP8CaU5o0bV5+0YJmw4VgJMupuwXn69A0DJmbU/G6OcQ21BH qe34KWkZ+qfpw== In-Reply-To: <838rd3cg7u.fsf@gnu.org> (Eli Zaretskii's message of "Thu, 01 Jun 2023 19:14:29 +0300") X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.bugs:262715 Archived-At: Eli Zaretskii writes: > header-line-format supports :eval and :when, so why cannot > which-function-mode use those to yield nil when there's nothing to > show? I thought so as well, but it seems that the header line is displayed even when the value of `header-line-format` yields nil, if it isn't plain nil. So this shows an empty header line: --8<---------------cut here---------------start------------->8--- (setq-default header-line-format '(:eval nil)) --8<---------------cut here---------------end--------------->8--- (In Emacs master with -Q.)